US7336191B2 - Gas-measuring system - Google Patents
Gas-measuring system Download PDFInfo
- Publication number
- US7336191B2 US7336191B2 US11/419,358 US41935806A US7336191B2 US 7336191 B2 US7336191 B2 US 7336191B2 US 41935806 A US41935806 A US 41935806A US 7336191 B2 US7336191 B2 US 7336191B2
- Authority
- US
- United States
- Prior art keywords
- gas
- base station
- measuring device
- measuring system
- accordance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
- 238000005070 sampling Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 28
- 230000002457 bidirectional effect Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/004—CO or CO2
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0044—Sulphides, e.g. H2S
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
- G01N35/00722—Communications; Identification
- G01N35/00871—Communications between instruments or with remote terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
- G01N2001/2276—Personal monitors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
Definitions
- the present invention pertains to a gas-measuring system with a mobile measuring device and a base station.
- a mobile gas-measuring device for the simultaneous detection of different pollution gases is known from DE 101 40 945 A1.
- Three electrochemical sensors, which are used to measure the concentrations of possible pollution gases in a gas sample, are located in a device housing.
- the gas concentration values measured by the sensors are processed by an evaluating unit integrated in the measuring device and outputted via a display unit.
- the evaluating unit checks the measured values for plausibility and for compliance with certain, preset limit values. An optical or acoustic alarm is triggered if limit values are possibly exceeded or in case of implausible measured values.
- the prior-art gas-measuring device is carried by the user as a personal monitoring device, so that pollution gases are rapidly recognized in the work area. Due to the mobility of the gas-measuring device, which is normally attached directly to the clothing or the upper body, it must have the most compact housing dimensions possible and be lightweight. The capacity of the power supply unit carried by the user is limited as a result. In case of longer-lasting measurement, this has the consequence that gas measurements are performed at certain time intervals only to save power or that the sound level of alarm generators is limited.
- gas-measuring device which is arranged stationarily in the environment of a user and continuously monitors the pollution gas content in the ambient atmosphere, it is required that the power supply should make possible a long use time and that possible warning messages be communicated to the user in a clearly perceptible manner, especially in case of high background noise level.
- gas-measuring devices can be carried by the user only to a limited extent.
- a personal monitoring device which is carried by the user
- a stationary monitoring device which is arranged in the work area of persons.
- Different measuring systems must usually be kept ready for this purpose, which increases the costs, especially due to the fact that twice the number of gas-measuring systems must be kept ready.
- the basic object of the present invention is to provide a gas-measuring system that is suitable for both mobile and stationary use.
- a gas-measuring system is provided with a mobile measuring device, which comprises sensors for detecting gas concentrations and a first control and calculating unit for processing the measured signals sent by the sensors and means for data transmission.
- a base station is provided having a holder for receiving the measuring device, a power supply unit, a second control and calculating unit for actuating the alarm generators arranged in the base station and interfaces for supplying gas to be measured to the sensors and for data exchange between the mobile measuring device and the base station.
- the advantage of the present invention is essentially that a base station for accommodating a mobile measuring device is designed such that the gas sampling takes place via the base station and warnings and alarms are communicated to the user from the base station via corresponding optical and acoustic transducers. Interfaces, which send the sample gas flow to the sensors, on the one hand, and couple the mobile measuring device to the base station for the transmission of data, on the other hand, are provided for this purpose between the mobile measuring device and the base station.
- the base station has a separate control and calculating unit, so that bidirectional data exchange is possible between the measuring device and the base station and the user can determine individually which functions are performed via the measuring device and what support is needed from the base station.
- the display fields and the alarm generators can be dimensioned larger at the base station, because the space available for installation is not limited here. This facilitates the reading of measured values and acoustic warnings can be communicated to the user in a more clearly audible manner.
- the user can also decide whether he performs the operation of the measuring device from the base station or whether certain settings take place directly at the mobile measuring device. Provisions are preferably made for the operating functions to be switched over automatically from the measuring device to the base station when the mobile measuring device is placed into the holder of the base station.
- the base station is designed such that gas sampling can also be carried out from a remotely located measuring point.
- a gas sampling tube is connected for this purpose to a measured gas pump arranged in the base station.
- the housing of the base station has a cable drum-like design, so that a long measuring gas tube can also be carried with the base station.
- High stability is obtained due to the base station designed in the form of a cable, because a side surface of the cable drum can be used as a base.
- the opposite side surface is used to receive the mobile measuring device.
- the side surfaces of the base station are advantageously of an annular design, so that the ring can also be used as a grip surface for transporting the base station.
- the base station advantageously has additionally an interface for transmitting electricity to the mobile measuring device.
- the use time of the mobile measuring device is thus prolonged, because the capacity of the power supply unit of the base station can be fully exhausted.
- FIG. 1 is a gas-measuring system with a mobile measuring device and a base station according to the invention.
- FIG. 2 is a perspective view of the mobile measuring device and the base station.
- FIG. 1 schematically illustrates a gas-measuring system 1 , which comprises a mobile measuring device 2 and a base station 3 .
- the mobile measuring device contains an oxygen sensor 4 , a CO sensor 5 , an H 2 S sensor 6 and a Kat-Ex sensor 7 that determines the concentration of combustible gases by catalytic combustion.
- the sensors 4 , 5 , 6 , 7 are connected via a signal processing unit 8 to a first central control and calculating unit 9 , which evaluates the measured gas concentrations by means of a program module 10 and outputs them via a display unit 11 . Warning limits can be assigned to the individual measured gas concentration values via a keyboard 12 .
- Possible alarms are sent via an optical display 13 , an acoustic alarm generator 14 or via a vibrator 15 .
- a measured gas pump 16 delivers the gas sample to be analyzed to the sensors 4 , 5 , 6 , 7 .
- a power supply unit 17 supplies the measuring device 2 with electricity. Measured and status data can be read via a bidirectional PC interface 18 . Program updates can also be read into the program module 10 with the PC interface.
- the base station 3 contains a battery pack 19 , a second control and calculating unit 20 , a display unit 21 , an acoustic alarm generator 22 , an optical alarm generator 23 and a vibrator 24 .
- a keyboard 25 is used to enter data of warning limits, which are assigned, e.g., to the gas species.
- the gas sampling is carried out via a sampling tube 26 and a pump 27 .
- the mobile measuring device 2 and the base station 3 are connected to one another via a pneumatic interface 28 , a plug type connection 29 , an infrared interface 30 and a receiving compartment 31 .
- the pneumatic interface 28 is used to pass on the gas sample drawn in by the pump 27 via the measured gas pump 16 to the sensors 4 , 5 , 6 , 7 .
- the plug type connection 29 couples the battery pack 19 with the power supply unit 17 , so that the capacity of both power supply units 17 , 19 can be utilized.
- Bidirectional data connection is established via the infrared interface 30 between the control and calculating units 9 , 20 .
- the mobile measuring device 2 is inserted into the receiving compartment 31 for operation and locked. The pneumatic and electric connections may then be established via the interfaces 28 , 29 , 30 .
- the control and calculating unit 9 transmits a device code to the control and calculating unit 20 of the base station 3 .
- a comparison is performed there with stored, permissible codes, and a release signal is generated for the bidirectional data exchange.
- the display unit 11 , the alarm generators 13 , 14 , 15 and the keyboard 12 are deactivated in another step and the display unit 21 , the alarm generators 22 , 23 , 24 and the keyboard 25 of the base station 3 are connected to the mobile measuring device 2 via the infrared interface 30 for data exchange.
- the mobile measuring device 2 is operated exclusively from the base station 3 .
- the program module 10 in the mobile measuring device is designed such that partial functions can also be transferred from the mobile measuring device to the base station 3 .
- Corresponding inputs can be made and values can be preset from the keyboards 12 , 25 .
- FIG. 2 shows a perspective view of the mobile measuring device 2 and the base station 3 .
- Identical components are designated by the same reference numbers as in FIG. 1 .
- the housing of the base station has a design similar to that of a cable drum with an upper ring 32 , a middle part 33 and a lower ring 34 .
- the base station 3 is placed on the lower ring 34 during measuring operation and the measured gas tube 26 for gas sampling can be unwound from the middle part 33 . Due to the cable drum-like design of the base station, it is also possible to accommodate longer measured gas tubes 26 on the base station 3 without handling being compromised by this in any way. Depending on the particular application, a certain length of the measured gas tube 26 can be unwound from the base station 3 .
- the alarm generators 22 , 23 , 24 which are not shown in greater detail, the keyboard 25 and the display unit 21 are arranged in a control panel 35 on the upper ring 32 of the base station 3 .
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005045272.8 | 2005-09-22 | ||
DE102005045272A DE102005045272B4 (en) | 2005-09-22 | 2005-09-22 | Gas Detection System |
Publications (2)
Publication Number | Publication Date |
---|---|
US20070063828A1 US20070063828A1 (en) | 2007-03-22 |
US7336191B2 true US7336191B2 (en) | 2008-02-26 |
Family
ID=37309932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/419,358 Active 2026-07-10 US7336191B2 (en) | 2005-09-22 | 2006-05-19 | Gas-measuring system |
Country Status (4)
Country | Link |
---|---|
US (1) | US7336191B2 (en) |
DE (1) | DE102005045272B4 (en) |
FR (1) | FR2891053B1 (en) |
GB (1) | GB2430495B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070296569A1 (en) * | 2006-06-22 | 2007-12-27 | Honeywell International Inc. | Hardwired alarm system with power-on sequence |
WO2013066316A1 (en) | 2011-11-01 | 2013-05-10 | Draeger Safety, Inc. | Detection of gas mixtures having an additive or synergistic toxic effect |
US20140264027A1 (en) * | 2011-10-21 | 2014-09-18 | Ag Instruments Ltd. | Gas analysers and a method of making a gas analyser |
WO2015053793A1 (en) | 2013-10-11 | 2015-04-16 | Draeger Safety, Inc. | Integrated continuous gas monitoring with triggered specific measurement |
WO2015053795A1 (en) | 2013-10-11 | 2015-04-16 | Draeger Safety, Inc. | Colorimetric gas monitoring system with storage magazine for disposable test elements |
WO2016115438A1 (en) * | 2015-01-16 | 2016-07-21 | Industrial Scientific Corporation | Modular gas monitoring system |
US9689864B2 (en) | 2012-02-01 | 2017-06-27 | Invoy Technologies, Llc | Method and apparatus for rapid quantification of an analyte in breath |
USD980734S1 (en) | 2016-01-15 | 2023-03-14 | Industrial Scientific Corporation | Gas monitoring device |
USD998478S1 (en) | 2016-01-15 | 2023-09-12 | Industrial Scientific Corporation | Gas monitoring device |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
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CN100474348C (en) * | 2005-09-29 | 2009-04-01 | 华为技术有限公司 | Gas detecting alarm method and mobile terminal |
DE102007041238A1 (en) * | 2007-08-30 | 2009-03-05 | Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG | Electrochemical sensor |
DE102008023523B4 (en) | 2008-05-15 | 2019-08-08 | Dräger Safety AG & Co. KGaA | Safety garment and security system |
CN101295425B (en) * | 2008-05-27 | 2010-10-06 | 杭州荣利科技有限公司 | Hydrogen sulphide gas on-line detecting and alarming device of fishroom on fishing boat |
DE102009032721B4 (en) | 2009-07-11 | 2020-01-09 | Dräger Safety AG & Co. KGaA | Gas Detection System |
DE102012013999A1 (en) * | 2011-11-28 | 2013-05-29 | Dräger Safety AG & Co. KGaA | Gas admission device for testing operability and calibration of gas measuring instruments, has a test chamber device connected to main pipes such that calibration gas and zero-point gas in pipes are fed time-sequentially in a row |
DE102015015153B4 (en) | 2015-11-25 | 2019-10-17 | Dräger Safety AG & Co. KGaA | Method for checking a pump device in a gas measuring system |
DE102015015150B4 (en) | 2015-11-25 | 2022-05-12 | Dräger Safety AG & Co. KGaA | Gas measuring system with a gas measuring device and a control device and method for operating a gas measuring device using a control device |
DE102015015152B4 (en) | 2015-11-25 | 2017-07-20 | Dräger Safety AG & Co. KGaA | Method for checking a gas sensor in a gas measuring system |
DE102015015151B4 (en) | 2015-11-25 | 2022-02-17 | Dräger Safety AG & Co. KGaA | Gas measuring system with a gas measuring device and a pump device and method for operating a gas measuring device by means of a pump device |
WO2018026989A1 (en) * | 2016-08-03 | 2018-02-08 | Stanley Black & Decker, Inc. | Construction jobsite computer data network and location system |
CN106442872B (en) * | 2016-08-16 | 2019-06-04 | 华电电力科学研究院 | A kind of intelligent early-warning method and system of Air Pollutant Emission total amount |
DE102016013959B4 (en) | 2016-11-23 | 2019-08-08 | Drägerwerk AG & Co. KGaA | Test device for a verification of a gas guide element |
DE102016013958B4 (en) | 2016-11-23 | 2019-08-08 | Drägerwerk AG & Co. KGaA | Device with a pumping device for checking a functional readiness of a gas guide element of a gas measuring system |
CN109115954A (en) * | 2018-08-16 | 2019-01-01 | 安徽爱依特科技有限公司 | Air detection warning device and its wearable device |
CN113391029B (en) * | 2021-05-19 | 2023-07-25 | 上海可深信息科技有限公司 | Monitoring and early warning system and method for potential safety hazard of gas station |
EP4160564A1 (en) * | 2021-09-29 | 2023-04-05 | Carrier Corporation | Device for detecting a combustible gas |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US4297689A (en) * | 1980-01-08 | 1981-10-27 | Interscan Corporation | Personnel-carried dosimeter |
US4882576A (en) * | 1986-11-25 | 1989-11-21 | Monty Boyd | Remote combustible gas sensor |
US5596314A (en) * | 1994-08-01 | 1997-01-21 | Quantum Group, Inc. | Enclosure for a gas detector system |
US5774038A (en) * | 1996-07-01 | 1998-06-30 | Welch; Dana L. | Safety monitor |
DE10140945A1 (en) | 2001-08-21 | 2003-03-13 | Draegerwerk Ag | Method for measuring the concentration of several gas components in a gas sample |
US6712586B2 (en) * | 2002-01-24 | 2004-03-30 | Riken Keiki Co., Ltd. | Gas suction pump device, gas feed adapter and gas alarm unit |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3819128C2 (en) * | 1988-06-04 | 1995-10-26 | Conducta Endress & Hauser | Gas detection system |
US7077328B2 (en) * | 1998-07-31 | 2006-07-18 | Abbott Laboratories | Analyte test instrument system including data management system |
US6442639B1 (en) * | 2000-04-19 | 2002-08-27 | Industrial Scientific Corporation | Docking station for environmental monitoring instruments |
DE10313639A1 (en) * | 2003-03-26 | 2004-10-07 | Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG | Electrochemical gas sensor |
EP1644727A1 (en) * | 2003-07-04 | 2006-04-12 | Schauenburg Flexadux (PTY) Ltd. | Gas monitoring apparatus |
-
2005
- 2005-09-22 DE DE102005045272A patent/DE102005045272B4/en active Active
-
2006
- 2006-05-19 US US11/419,358 patent/US7336191B2/en active Active
- 2006-09-12 FR FR0607957A patent/FR2891053B1/en not_active Expired - Fee Related
- 2006-09-14 GB GB0618119A patent/GB2430495B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4297689A (en) * | 1980-01-08 | 1981-10-27 | Interscan Corporation | Personnel-carried dosimeter |
US4882576A (en) * | 1986-11-25 | 1989-11-21 | Monty Boyd | Remote combustible gas sensor |
US5596314A (en) * | 1994-08-01 | 1997-01-21 | Quantum Group, Inc. | Enclosure for a gas detector system |
US5774038A (en) * | 1996-07-01 | 1998-06-30 | Welch; Dana L. | Safety monitor |
DE10140945A1 (en) | 2001-08-21 | 2003-03-13 | Draegerwerk Ag | Method for measuring the concentration of several gas components in a gas sample |
US6712586B2 (en) * | 2002-01-24 | 2004-03-30 | Riken Keiki Co., Ltd. | Gas suction pump device, gas feed adapter and gas alarm unit |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7825817B2 (en) * | 2006-06-22 | 2010-11-02 | Honeywell International Inc. | Hardwired alarm system with power-on sequence |
US20070296569A1 (en) * | 2006-06-22 | 2007-12-27 | Honeywell International Inc. | Hardwired alarm system with power-on sequence |
US9927365B2 (en) * | 2011-10-21 | 2018-03-27 | Ag Instruments Ltd. | Gas analysers and a method of making a gas analyser |
US20140264027A1 (en) * | 2011-10-21 | 2014-09-18 | Ag Instruments Ltd. | Gas analysers and a method of making a gas analyser |
WO2013066316A1 (en) | 2011-11-01 | 2013-05-10 | Draeger Safety, Inc. | Detection of gas mixtures having an additive or synergistic toxic effect |
US9689864B2 (en) | 2012-02-01 | 2017-06-27 | Invoy Technologies, Llc | Method and apparatus for rapid quantification of an analyte in breath |
WO2015053793A1 (en) | 2013-10-11 | 2015-04-16 | Draeger Safety, Inc. | Integrated continuous gas monitoring with triggered specific measurement |
WO2015053795A1 (en) | 2013-10-11 | 2015-04-16 | Draeger Safety, Inc. | Colorimetric gas monitoring system with storage magazine for disposable test elements |
WO2016115438A1 (en) * | 2015-01-16 | 2016-07-21 | Industrial Scientific Corporation | Modular gas monitoring system |
US10324073B2 (en) | 2015-01-16 | 2019-06-18 | Industrial Scientific Corporation | Modular gas monitoring system |
US11408876B2 (en) | 2015-01-16 | 2022-08-09 | Industrial Scientific Corporation | Modular gas monitoring system |
USD980734S1 (en) | 2016-01-15 | 2023-03-14 | Industrial Scientific Corporation | Gas monitoring device |
USD998478S1 (en) | 2016-01-15 | 2023-09-12 | Industrial Scientific Corporation | Gas monitoring device |
Also Published As
Publication number | Publication date |
---|---|
DE102005045272A1 (en) | 2007-04-05 |
DE102005045272B4 (en) | 2007-10-04 |
FR2891053B1 (en) | 2010-02-12 |
GB0618119D0 (en) | 2006-10-25 |
GB2430495B (en) | 2009-03-18 |
GB2430495A (en) | 2007-03-28 |
US20070063828A1 (en) | 2007-03-22 |
FR2891053A1 (en) | 2007-03-23 |
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Legal Events
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